Audio device and spatial noise reduction method thereof, and system

Abstract

The invention discloses an audio device and a spatial noise reduction method thereof. The audio device comprises a microphone array and a horn array. The microphone array comprises a plurality of first microphones arranged in different spatial directions. The horn array comprises a plurality of first horns arranged one by one corresponding to the first microphone. The method includes acquiring a first sound signal received by each of the first microphones; the first sound signal includes a user sound signal and a noise sound signal. Controlling a corresponding first horn to play a suppressed sound signal for the noise sound signal according to the preset sound information and each first sound signal; the suppressed sound signal includes an inverse sound wave for suppressing a correspondingnoise sound signal, and the preset sound information includes user sound information acquired in advance. The invention enlarges the suppression range of the spatial noise in the use process, enhances the noise reduction effect, and also ensures that the sound signal of the user is not suppressed, so as to be convenient for the user to use.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of noise reduction, and in particular, to an audio device and a spatial noise reduction method and system thereof. Background technique [0002] Noise exists everywhere in people's lives, such as the sound of vehicles running, whistles, construction sounds, etc. Noise brings great troubles to people's lives, and in severe cases, it will affect human health. With the development of science and technology, active noise reduction technology came into being. Active noise reduction is to offset the external noise by generating reverse sound waves equal to the external noise through the noise reduction system. At present, the active noise reduction system in the prior art is usually composed of a single microphone and a single speaker. After the microphone picks up the noise, only one speaker can emit an anti-phase sound wave opposite to the noise phase to cancel the noise. However, Since th...

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Problems solved by technology

At present, the active noise reduction system in the prior art is usually composed of a single microphone and a single speaker. After the microphone picks up the noise, only one speaker can emit an anti-phase sound wave opposite to the noise phase to cancel the noise. However, Since the noise will be scattered during the propagation process, and the noise is often not transmitted from one direction, the noise reduction effect of the active noise reduction system based on a single microphone and a single speaker in the prior art is poor, and cannot better meet User needs

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